Ore-roaster.



mlassms; v Patented Oct. 24, mos.

. c. n. BOUTON, H; n. GREEN, A. mnoss' & A. A. GHAINEY.

"ORE ROASTER. Y

(Application and Feb. 23, 1899.)

(no mam 2 sham-sheet 1.

m: imam: Prrgns co. mofauwa. WASHINGTON, n cy No. 635,418. Patented Oct. 24, was

c. n; Bouron, u. H. GREEIL'A. n. RUSS & A. A.- CHAINEY.

' ORE BOASTER.

' (Application filed Feb. 23, 1:399. (No ModaL) 2 Sheets-Shae! 2.

ilNrrno STATES PATENT Errors.

CLINTON D. BOUTON, OF ITH AOA, NEW YORK, AND HENRY H. GREEN, AN- DREW D. ROSS, AND AMEDE A. OHAINEY, OF SUNSHINE, COLORADO.

ORE-ROASTER.

SPECIFICATION forming part of Letters Patent No. 635,418, dated October 24, 1899.

Application filed February 23, 1899. Serial No. 706,619. We model.)

To aZZ whom it may concern: struction and lined with fire-brick or other Beit known that We, CLINTON D. BOUTON,0 heat-resisting material, said barrel being di- Ithaca, Tompkins-county, State of New York, vided into a roasting-compartment A and a and HENRY H. GREEN, ANDREW D. Ross, heating-fiue A by means of a longitudinal 55 and AMEDE A. CHAINEY, residingatSunshine, partition A This partition is substantially in the county of Boulder, State of Colorado, horizontal in position and may be supported citizens of the United States, have invented by any suitable meansfor instance, posts certain new and useful Improvements in Oreor standards A beneath the same. The par- Roasters, of which the following is a specifiticular construction of this barrel and the 60 lo cation, reference being had therein to the acarrangement of the passages or chambers companying drawings. I therein are not essential to the objects of this This invention relates to ore-roasters, and invention, and the same may be varied in the particularly to a roaster in which the feed of uses of the roaster. The barrel A is supthe ore is produced by the oscillatory action ported in any suitable manner-for instance, 65 of the roaster. upon beams B, maintained in an inclined po- The invention has for its object to produce sition by means of vertical standards or piers improved means for supporting the roasting B, upon which are mounted suitable journalbarrel or cylinder against an endwise moveboxes 0, carrying supporting-rollers 0, upon ment and for imparting to the same an oscilwhich rest and travel peripheral tracks or 70 2o latory movement. ways A having a beveled face to insure con- It has a further object to improve the detact in a horizontal line with the supportingtails of the feeding and delivery mechanism roller O, and thus carry the Weight of the in order to secure the most advantageous'hanbarrel or cylinder which is movable upon a dling of the material possible. series of these supporting rollers and tracks. 75 A further object is to provide for the longi- For the purpose of imparting an oscillatudinal expansion of the roasting-barrel, so tory motion to the barrel or cylinder A a segas to prevent any injury to the same or adjamental rack-gear D is provided and adapted cent parts by reason of expansion when the to mesh with a reciprocating rack-bar D, to barrel becomes highly heated. which motion is transmitted from a crank- 80 Other objects and advantages of the inven arm D by means of an intermediate link or tion will hereinafter appear in the following pitman D The crank-arm D is mounted description, and the novel features thereof upon and rotated bya driving-shaft D suitwill be particularly pointed out in the ap ablysupported at one side of the barrel upon pended claims. an extending frame E, the out-er end of which 85 In the drawings, Figure l is a vertical lonmay rest upon a pier E and be supported by gitudinal section through the roaster on line means of a truss-beam E as shown in Fig. 1 1 of Fig. 4:. Fig. 2 is a detail plan view of The frame E may also be used to support the mechanism for producing an oscillatory suitable bearing-rollers E upon which the movement of the roasting-barrel. Fig. 3 is rack-bar D may rest, said bar being guided 90 a cross-section illustrating the oscillatory in its movement by means of lugs E at 0pmechanism on the line 3 3 of Fig. 1. Fig. 4 posite sides thereof. The crank-arm'D may is a vertical cross-section through the delivbe provided with a suitable slot D within ery portion of the barrel on the line 4 4. of which one end of the pitman D can be ad- Fig. 1, and Fig. 5 is a similar view at the justed to vary the length or extent of move- 5 feeding end of the barrel on the line 5 5 of ment imparted to the rack-bar D, and thus Fig. 1. regulate or limit the degree of oscillation Like letters of reference indicate like parts imparted to the barrel. The driving-shaft D throughout the several figures of the drawis provided at opposite ends with similar ings. crank-arms, so as to impart motion to the 10a The letterA designates a roasting barrel or barrel at opposite sides of the longitudinal cylinder, which may be of any desired concenter thereof, and thus apply the power thereto in such manner as to prevent any strain upon the parts, as would be the case where the oscillating power is applied at a single point. The driving-shaft 1) may be actuated by any suitable meansfor instance, a pinion or gear D thereon may mesh with a similar gear D supported upon a shaft D located upon any adjacent fixed part, said shaft also carrying a gear D meshing with a gear D upon a shaft D, which is driven by means of a belt frictionallyengaging the pulley D located thereon. This structure of oscillating gears causes the barrel to start slowly and gradually gain in speed.

and then slow down as it reaches the limit of its oscillation, thus causing no jar at the moment when the direction of oscillation is changed, which is substantially at the time when the crank-arm and pitman have rotated to a dead-center. This obviates the jar and strain upon the machine caused by quickly starting and stopping and produces a smooth continuous oscillation of the barrel, found particularly desirable in producing a feed of the ore through the roasting-chamber.

The barrel is provided atits lower end with a fire-box F, which is preferably stationarily located and provided with horizontally-disposed grate-bars F and with a flanged opening F communicating with the heat-flue A of the barrel or cylinder. (See Fig. 1 and dotted lines on Fig. 4E.) The upper end of the cylinder is provided with a suitable smokebox G, having an escape stack G, and mounted upon a truck G adapted to reciprocate upon rollers G carried upon the supporting-beam B. This structure permits a longitudinal expansion of the barrel without danger of buckling or breaking any of the joints thereof, as the truck will move freely upon its supporting-rollers and the several supportin g-rollers for the barrel likewise permit a longitudinal movement without interfering with their action. The lower end of the beam 13 is provided with a grooved or flanged roll C mounted in a box 0 and adapted to engage a cooperating flange A.

This flange and roller are particularly intended to prevent the end thrust of the barrel against the fire-box F and are located in such position as to most effectually support the barrel and restrain any thrusting action thereof incident to weight or other causes.

The fire-box F and smoke-box G are supported against rotation, while the rotatable cylinder or barrel A is closely fitted in relation to these parts by any suitable meansfor instance, a ring a upon the ends of both the fire and smoke boxes and an overlapping annular flange a, provided at each end of the barrel A. The fire-box is also provided with a flange F extending into the fire-flue A of the barrel. These flanges are made of such an extent as to permit the expansion of the several parts without disconnecting the same, so as to permit the escape of heat orproducts of combustion.

The barrel is fed from a hopper H, supported above the barrel by means of a circumferential band H, within which the barrel A oscillates. This band H is held against rotation by supports I1 resting upon the movable truck G as shown in Fig. 1. A slide I1 is provided at the lower portion of the hopper by which the feed of ore may be controlled or entirely out off. It will be seen that as the feed-opening A of the barrel passes beneath the hopper II a charge of ore will be admitted into the roasting-chamber, and in the continued oscillation of the barrel the opening A passes beneath the band H, and thus prevents the escape of sulfur or other gases from the ore through the hopper, which would be both obnoxious and dangerous in a roaster of this character. The continued and automatic oscillation of the barrel successively feeds charges of ore to the roasting-chamber, so that the same is gradually fed downward without choking the chamber and the operation rendered automatic. The escape of the sulfur and other gases is permitted by a series of openings A in the end wall A of the roasting-chamber, so that the gases pass into the smoke-box and are drawn from the chamber by the draft through the smoke box and stack, so as to be partially or wholly consumed by the products of combustion. The ore when it reaches the lower end of the barrel in its roasted condition is delivered through openings A at opposite sides of the barrel and discharged within a casing I. These openings may, if found desirable, be closed by pivoted doors A, which will be opened by the weight of the ore and automaticallyclosed bygravity when the barrel is oscillated to shift the ore to the opposite side, as shown by dotted lines in Fig. 4. An air-inlet J is also provided at the lower end of the roasting-chamber and controlled by a slide J to admit the necessary amount of air to oxidize the ore and carry the gases liber ated therefrom to the opposite end of the chamber and into the stack. The casing 1, into which the ore is discharged, is rotated with the barrel and supported by means of a rib I to allow space for the opening of the doors and passage of the ore. The lower portion of this casing is provided with a discharge-opening 1 through which the ore is discharged into a suitable chute or hopper K to a place of storage, said hopper being stationarily supported and provided with upward extensions K, extending peripherally of the casing I. This structure permits the constant discharge of the ore without danger of a draft or undue quantity of air entering the roasting-chamber through the dischargeopenings, which will be liable to occur when said openings communicate with the atmosphere.

From the foregoing description it will be obvious that the ore will be introduced at the upper end of the barrel and gradually fed downward therein by means of suitable re tarding devices-such, for instance, as alternatelydisposed partitions A until it reaches the lower end of the barrel, where it is discharged in the manner hereinbefore described. The roasting-chamberis maintained in a heated condition by the products of combustion passing through the flue A beneath the same, which in their passage create a draft to draw the gases liberated from the ore from the roasting-chamber and into the discharge-stack. It will be seen that the loca tion of the fire-box with substantially level grate-bars maintains the fuel always in a proper position within the box, while the supporting-rollers hold the barrel against endwise movement and sustain the weight thereof at a number of points to prevent binding against the actuating mechanism or against the end of the fire-box to which it is connected. The structure presented also permits expansion of parts without affecting their relative connection or causing buckling or breaking of the barrel, while the arrangement of the feed-hopper and discharge-opening is such that these parts are not affected by the heat or products of combustion used in roasting, which will warp and destroy metallic parts with which they come into contact. Furthermore, the driving mechanism is such as to produce the most desirable and smooth oscillation of the barrel with the minimum expenditure of power and with the best results in the feeding and roasting of the ore.

It is obvious that changes may be made in the details of construction and configuration of the several parts without departing from the spirit of this invention as defined by the appended claims.

Having described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In an ore-roaster, the combination with an inclined roasting-chamber having a feedaperture therein, of astationary box at one end thereof, a smoke-box at the opposite end, a movably-mounted truck beneath said smoke-bombearings for said chamber adapted to permit a longitudinal movement of the chamber upon the bearings, means for oscillating said chamber, and a feed-hopper carried by an apertured band surrounding said barrel and supported from said truck whereby said hopper is arranged to register with the feed-aperture in said chamber; substantially as specified.

2. In an ore-roaster, the combination with an inclined barrel having a feed-aperture in its upper port-ion, astationary apertured band surrounding said barrel,a feed-hop per carried by said band and arranged to intermittently communicate with said feed-aperture in the movement of the barrel, and means for oscillating said barrel; substantially as specified.

3. In an ore-roaster,- the combination with an inclined barrel having a feed-aperture, a stationary apertured band surrounding said arranged to comm unicate with said feed-aperture in the movement of the barrel, a truck movable longitudinally of said barrel, means forsupportin g said band from said truck, and means for oscillating said barrel; substantially as specified.

at, In an ore-roaster, the combination with an inclined barrel having discharge-openings at opposite sides thereof, of a casingsurround- .ing said barrel to receive the material discharged from said openings, means for oscillating said barrel, and doors pivotally mounted at the upper edge of said discharge-openings so as to alternately open and close by gravity in the oscillations of the barrel; substantially as specified.

5. In an ore-roaster, the combination with an inclined barrel having discharge-openings at opposite sides, and means for oscillating said barrel, of a casing having a dischargeopening and surrounding said barrel to receive the material discharged from said openings, doors pivotally mounted at the upper edge of said discharge-openings to be alternately opened and closed by gravity, and a dischargechute communicating with said opening in said casing; substantially as specified.

6. In an ore-roaster,ihe combination of an inclined roasting-barrel provided at its lower portion with discharge-openings upon opposite sides, means for oscillating said barrel, a casing surrounding said openings and provided at its lower portion with a dischargeopening, and a stationary chute surrounding the lower portion of said oscillated barrel and casing; substantially as specified.

7. In an ore-roaster, the combination of a roasting-cylinder mounted for oscillation, a segmental gear thereon, a horizontally-disposed rack-bar meshing with said gear, a rotatable crank-arm, and a pitman pivotally connected to said bar and crank-arm; substantially as specified.

8. In an ore-roaster, the combination of a roasting-cylinder mounted for oscillation, a segmental gear thereon, a horizontally-disposed'rack-bar meshing with said gear, a rotatable crank-arrn, a pitman pivotally connected to said bar and crank-arm, and rollerbearings for supporting said rack-bar; substantially as specified.

9. In an ore-roaster, the combination of a roasting-cylinder mounted for oscillation, a segmental gear thereon, a horizontally-disposed rack-bar meshing with said gear, a rotatable crank-arm, a shaft for said arm, a pitman pivotally connected to said bar and crank-arm, roller-bearings for supporting said rack-bar, and a frame extending to one side of said barrel to support the shaft of said crank-arm; substantially as specified.

10. In an ore-roaster, the combination of a roasting-barrel mounted for oscillation, segmental gears carried by said barrel, rack-bars located beneath said gears, a driving-shaft barrel,a feed-hopper carried by said band and carrying at opposite ends crank-arms and conncctions between said crank-arms and rackbars; substantially as specified.

11. In an ore-roaster, the combination of a roasting-barrel mounted for oscillation, a segmental gear carried thereby, a rack-bar in mesh with said gear, a driving-shaft provided with a pinion, a slotted crank-arm upon said shaft, and a pitman adjustably mounted in the slot of said arm and pivoted at its opposite end to said rack-bar; substantially as specified.

12. In an ore-roaster, the combination with a barrel mounted for oscillation and having an inlet-opening, fire and smoke boxes at opposite ends thereof, a stationary feed-hopper having a band surrounding said barrel and communicating with the inlet, dischargeopenings at opposite sides of said barrel comm unicating with a discharge-chute, means for supporting said barrel, a gear on said barrel, a rack-bar, a crank-arm, and a pitman connecting said bar and arm; substantially as specified.

13. In an ore-roaster, the combination with a barrel mounted for oscillation and having an inlet-opening, fire and smoke boxes at opposite ends thereof, a stationary feed-hopper having a band surrounding said barrel and communicating with the inlet, dischargeopenings at opposite sides of said barrel communicatin g with a discharge-chute, tracks or flanges on said barrel, supporting-rollers upon which said tracks travel, a gear on said barrel, a rack-bar, a crank-arm, and a pitman connecting said bar and arm; substantially as 15. In an ore-roaster, the combination with a barrel mounted for oscillation and having an inlet-opening, fire and smoke boxes at opposite ends thereof, a stationary feed-hopper having a band surrounding said barrel and communicating with the inlet, dischargeopenings at opposite sides of said barrel communicating with a discharge-chute, tracks or flanges on said barrel, supporting-rollers upon which said tracks travel, segmental gears and rack-bars driven by crank-arms for oscillating said barrel, and a longitudinally-movable truck beneath said smoke-box supporting said feed-hopper and band; substantially as specified.

16. In an ore-roaster, the combination with a barrel mounted for oscillation and having an inlet-opening, fire and smoke boxes at op posite ends thereof, a stationary feed-hopper having a band surrounding said barrel and communicating with the inlet, dischargeopenings at opposite sides of said barrel com municating with a discharge-chute, tracks or flanges on said barrel, supporting-rollers upon which said tracks travel, segmental gears and rack-bars driven by crank-arms for oscillating said barrel, a longitudinallymovable truck beneath said smoke-box supporting said feed-hopper and band, and flanges upon opposite ends of said barrel overlapping an end of said fire and smoke boxes to provide an expansible connection; substantially as specified.

17. In an ore-roaster, the combination with fire and smoke boxes, of an inclined barrel connecting the same and provided with a roasting and a heating chamber, said heating-chamber communicating with both the fire and smoke boxes and said roasting-chamber having a gas-outlet into said smoke-box, feed and discharge devices communicating with said roasting-chamber, and means for supporting said barrel, a gear on said barrel, a rack-bar, a crank-arm, and a pitman connecting said bar and arm; substantially as specified.

In testimony whereof We affix our signatures in presence of witnesses.

CLINTON D. BOUTON. HENRY H. GREEN. ANDREW D. ROSS. AMEDE A. OHAINEY.

Vitnesses to signature of Clinton D. Bouton:

EUGENE TERRY, KITTIE E. GILLESPIE. \Vitnesses to signatures of Henry H. Green, Andrew D. Ross, and Amede A. Ohainey:

JAMES Covvin, H. F. LULL. 

